Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 82fef40475c24c03d0e71050f248d899996a67de7bdc2c82dfb12ef26dae3482:16:8
   |
16 |         let total: UFix64 = SwapConfig.ScaledUInt256ToUFix64(res) - 0.2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^